AT89C5131A-M Atmel Corporation, AT89C5131A-M Datasheet - Page 156
AT89C5131A-M
Manufacturer Part Number
AT89C5131A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5131A-M
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
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Figure 24-1. Power-down Exit Waveform
156
AT89C5130A/31A-M
XTAL
INT0
INT1
Active Phase
Exit from power-down by reset redefines all the SFRs, exit from power-down by external inter-
rupt does no affect the SFRs.
Exit from power-down by either reset or external interrupt does not affect the internal RAM
content.
Note:
This table shows the state of ports during idle and power-down modes.
Table 24-1.
Note:
Power-down
Power-down
Mode
Idle
Idle
If idle mode is activated with power-down mode (IDL and PD bits set), the exit sequence is
unchanged, when execution is vectored to interrupt, PD and IDL bits are cleared and idle mode is
not entered.
1. Port 0 can force a 0 level. A “one” will leave port floating.
State of Ports
Program
Memory
External
External
Internal
Internal
Power-down Phase
ALE
1
1
0
0
PSEN
1
1
0
0
Oscillator restart Phase
Floating
Floating
PORT0
Data
Data
Port
Port
(1)
(1)
Port Data
Port Data
Port Data
Port Data
PORT1
Active Phase
Port Data
Port Data
Port Data
Address
PORT2
Port Data
Port Data
Port Data
Port Data
PORT3
4337K–USB–04/08
Port Data
Port Data
Port Data
Port Data
PORTI2
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